i use this stuff
https://www.overclockers.co.uk/xspc-ec6-coolant-blue-uv-1l-wc-152-xs.html
and the tubing is just the £2.99 per m clear flexable xspc stuff overclockers sell. i don't know if the temps are massively different i stopped checking and doing benchmarks years ago it still plays all the games no problem though. MB and cpu is 8 years old now what a chip it's been i'm trying too get 10 years out of it then i'll retire it and wall mount it as geek art .